The Structure of Callisto, the Outer Galilean Satellite of Jupiter

question 14

Multiple Choice

The structure of Callisto, the outer Galilean satellite of Jupiter, is thought to be

• A) a mixed ice-rock interior surrounded by a liquid ocean and then a solid icy crust.
• B) mostly or entirely rock, with no firm evidence of an iron core, and active volcanoes on its surface.
• C) an iron core surrounded by a rocky mantle and an ice mantle and crust.
• D) almost all water ice, in view of its low average density.

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